package jmri.jmrit.operations;

import org.junit.Assert;
import org.junit.jupiter.api.*;

import jmri.InstanceManager;
import jmri.jmrit.operations.locations.LocationManager;
import jmri.jmrit.operations.locations.LocationManagerXml;
import jmri.jmrit.operations.rollingstock.cars.CarManager;
import jmri.jmrit.operations.rollingstock.cars.CarManagerXml;
import jmri.jmrit.operations.rollingstock.engines.EngineManager;
import jmri.jmrit.operations.rollingstock.engines.EngineManagerXml;
import jmri.jmrit.operations.routes.RouteManager;
import jmri.jmrit.operations.routes.RouteManagerXml;
import jmri.jmrit.operations.setup.OperationsSetupXml;
import jmri.jmrit.operations.trains.TrainManager;
import jmri.jmrit.operations.trains.TrainManagerXml;
import jmri.util.JUnitUtil;

/**
 * Tests to make sure the demo files load and the managers are properly
 * configured once they are loaded.
 * <p>
 * Still to do: Everything
 *
 * @author Paul Bender Copyright (C) 2015
 */
public class XmlLoadTest extends OperationsTestCase {

    // load a set of operations files.  These are the default
    // demo files.
    @Test
    public void testDemoLoad() {
        runTest("java/test/jmri/jmrit/operations/xml/DemoFiles/", 12, 12, 10, 210, 19);
        Assertions.assertDoesNotThrow( () -> {
            //shut down the AutoSave thread as it is running.
            jmri.jmrit.operations.setup.Setup.setAutoSaveEnabled(false);
            JUnitUtil.waitThreadTerminated("Operations Auto Save");
        });
    }

    // load a set of operations files with trains that have been built.
    // these are the demo files, but they were stored after building trains.
    // This test fails intermittently
    // XmlLoadTest.testDemoWithBuildLoad:51 Unexpected exception thrown: java.lang.NullPointerException
    
    @Test
    public void testDemoWithBuildLoad() {
        runTest("java/test/jmri/jmrit/operations/xml/DemoFilesWithBuiltTrains/", 12, 12, 10, 210, 19);
        Assertions.assertDoesNotThrow( () -> {
            //shut down the AutoSave thread as it is running.
            jmri.jmrit.operations.setup.Setup.setAutoSaveEnabled(false);
            JUnitUtil.waitThreadTerminated("Operations Auto Save");
        });
    }

    /*
     * Private function to actually run the test
     *
     * @param directory String directory location of the files to load
     *
     * @param locs number of locations expected after load
     *
     * @param routes number of routes expected after load
     *
     * @param trains number of trains expected after load
     *
     * @param cars number of cars expected after load
     *
     * @param engines number of engines expected after load
     */
    private void runTest(String directory, int locs, int routes, int trains,
            int cars, int engines) {
        Assert.assertEquals("Before read Number of Locations", 0,
                InstanceManager.getDefault(LocationManager.class).getList().size());
        Assert.assertEquals("Before read Number of Routes", 0,
                InstanceManager.getDefault(RouteManager.class).getRoutesByNameList().size());
        Assert.assertEquals("Before read Number of Trains", 0,
                InstanceManager.getDefault(TrainManager.class).getTrainsByNameList().size());
        Assert.assertEquals("Before read Number of Cars", 0,
                InstanceManager.getDefault(CarManager.class).getList().size());
        Assert.assertEquals("Before read Number of Engines", 0,
                InstanceManager.getDefault(EngineManager.class).getList().size());

        InstanceManager.getDefault(OperationsSetupXml.class);
        OperationsSetupXml.setOperationsDirectoryName(directory.substring(0, directory.length() - 1));
        Assertions.assertDoesNotThrow( () ->  {
            // use readFile, because load wraps readFile with a try catch.
            InstanceManager.getDefault(OperationsSetupXml.class)
                    .readFile(OperationsSetupXml.getOperationsDirectoryName() +
                            "/" +
                            InstanceManager.getDefault(OperationsSetupXml.class).getOperationsFileName());
            InstanceManager.getDefault(LocationManagerXml.class)
                    .readFile(OperationsSetupXml.getOperationsDirectoryName() +
                            "/" +
                            InstanceManager.getDefault(LocationManagerXml.class).getOperationsFileName());
            InstanceManager.getDefault(RouteManagerXml.class)
                    .readFile(OperationsSetupXml.getOperationsDirectoryName() +
                            "/" +
                            InstanceManager.getDefault(RouteManagerXml.class).getOperationsFileName());
            InstanceManager.getDefault(TrainManagerXml.class)
                    .readFile(OperationsSetupXml.getOperationsDirectoryName() +
                            "/" +
                            InstanceManager.getDefault(TrainManagerXml.class).getOperationsFileName());
            InstanceManager.getDefault(CarManagerXml.class)
                    .readFile(OperationsSetupXml.getOperationsDirectoryName() +
                            "/" +
                            InstanceManager.getDefault(CarManagerXml.class).getOperationsFileName());
            InstanceManager.getDefault(EngineManagerXml.class)
                    .readFile(OperationsSetupXml.getOperationsDirectoryName() +
                            "/" +
                            InstanceManager.getDefault(EngineManagerXml.class).getOperationsFileName());
        },"Exception reading operations files");

        // spot check to make sure the correct number of items were created.
        Assert.assertEquals("Number of Locations", locs,
                InstanceManager.getDefault(LocationManager.class).getList().size());
        Assert.assertEquals("Number of Routes", routes,
                InstanceManager.getDefault(RouteManager.class).getRoutesByNameList().size());
        Assert.assertEquals("Number of Trains", trains,
                InstanceManager.getDefault(TrainManager.class).getTrainsByNameList().size());
        Assert.assertEquals("Number of Cars", cars, InstanceManager.getDefault(CarManager.class).getList().size());
        Assert.assertEquals("Number of Engines", engines,
                InstanceManager.getDefault(EngineManager.class).getList().size());
    }

    // from here down is testing infrastructure
    // Ensure minimal setup for log4J
    @BeforeEach
    @Override
    public void setUp() {
        JUnitUtil.setUp();
        reset();

        // clear the operations directory name.
        OperationsSetupXml.setOperationsDirectoryName("operations");
        OperationsSetupXml.setFileLocation("temp" + java.io.File.separator);
    }
}